Jefferson Adams is a freelance writer living in San Francisco. His poems, essays and photographs have appeared in Antioch Review, Blue Mesa Review, CALIBAN, Hayden's Ferry Review, Huffington Post, the Mississippi Review, and Slate among others.

He is a member of both the National Writers Union, the International Federation of Journalists, and covers San Francisco Health News for Examiner.com.

By Jefferson Adams

Published on 06/29/2011

Serbian tennis star Novak Djokovic credits an unbeaten string of victories on the court to his special, gluten-free diet. Meanwhile, Sabine Lisicki recently attributed her collapse on the threshold of a major upset over third seed Vera Zvonareva in the second round of the French Open to a need for her body to adjust to her new gluten-free diet

Meanwhile, Sabine Lisicki recently attributed her collapse on the threshold of a major upset over third seed Vera Zvonareva in the second round of the French Open to a need for her body to adjust to her new gluten-free diet; which Lisicki adopted after discovering she is intolerant to gluten, a protein in cereal grains.

After physically crumbling within sight of victory, a sobbing Lisicki was carried from the court on a stretcher. The 21-year-old later explained on her website (www.sabinelisicki.com) that her collapse occurred because her body simply let her down. She said that "[d]octors recently discovered that I am intolerant to gluten -- meaning I can't eat e.g. pasta, one of my biggest energy sources."

"My body needs to adjust to the big change and needs some time. It is good that we found out and it will only make life better in the long run, she added."

Pasta and bread are still staple foods for many top athletes, as they are important sources of energy. Athletes on gluten-free diets need to find new energy sources.

Djokovic has enjoyed a 39-match winning streak after changing his diet in late 2010, after tests by his nutritionist showed him to be gluten intolerant.

Like Lisicki, Djokovic's body cannot process the carbohydrates he traditionally used to fuel his body, and he was forced to find alternative foods to provide the energy and stamina needed to prevail in long matches. For Djokovic, the change has paid off handsomely.

"I have lost some weight but it's only helped me because my movement is much sharper now and I feel great physically," said an energized Djokovic, who has beaten Rafael Nadal in four finals this year.